[teiid-commits] teiid SVN: r664 - in trunk: common-internal/src/main/java/com/metamatrix/common/queue and 13 other directories.

Author: shawkins Date: 2009-03-30 16:55:34 -0400 (Mon, 30 Mar 2009) New Revision: 664 Modified: trunk/common-core/src/main/java/com/metamatrix/core/BundleUtil.java trunk/common-internal/src/main/java/com/metamatrix/common/queue/WorkerPool.java trunk/common-internal/src/main/java/com/metamatrix/common/queue/WorkerPoolFactory.java trunk/common-internal/src/main/resources/com/metamatrix/common/i18n.properties trunk/common-internal/src/test/java/com/metamatrix/common/queue/TestQueueWorkerPool.java trunk/connector-api/src/main/java/org/teiid/connector/api/ConnectorEnvironment.java trunk/connectors/connector-salesforce/src/test/java/com/metamatrix/connector/salesforce/TestConnector.java trunk/engine/src/main/java/org/teiid/dqp/internal/datamgr/impl/ConnectorEnvironmentImpl.java trunk/engine/src/main/java/org/teiid/dqp/internal/datamgr/impl/ConnectorManager.java trunk/engine/src/main/java/org/teiid/dqp/internal/pooling/connector/ConnectionPool.java trunk/engine/src/main/java/org/teiid/dqp/internal/pooling/connector/PooledConnector.java trunk/engine/src/main/java/org/teiid/dqp/internal/process/RequestWorkItem.java trunk/engine/src/main/resources/com/metamatrix/dqp/i18n.properties trunk/engine/src/test/java/org/teiid/dqp/internal/pooling/connector/TestConnectionPool.java trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/SocketVMController.java trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/server/ServerWorkItem.java trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/server/SocketClientInstance.java trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/server/SocketListener.java trunk/server/src/main/resources/com/metamatrix/platform/i18n.properties trunk/server/src/test/java/com/metamatrix/common/comm/platform/socket/server/TestCommSockets.java Log: TEIID-445, TEIID-386 cleanup of workerpool and logging of expected user exceptions. Modified: trunk/common-core/src/main/java/com/metamatrix/core/BundleUtil.java =================================================================== --- trunk/common-core/src/main/java/com/metamatrix/core/BundleUtil.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/common-core/src/main/java/com/metamatrix/core/BundleUtil.java 2009-03-30 20:55:34 UTC (rev 664) @@ -26,6 +26,7 @@ import java.util.List; import java.util.MissingResourceException; import java.util.ResourceBundle; + import com.metamatrix.core.util.ArgCheck; import com.metamatrix.core.util.StringUtil; @@ -186,12 +187,8 @@ */ public String getString(final String key, final Object... parameters) { - String text = getProductValue(key); + String text = getString(key); - if (text == null) { - text = getString(key); - } - // Check the trivial cases ... if (text == null) { return '<' + key + '>'; @@ -223,5 +220,4 @@ return value; } - } Modified: trunk/common-internal/src/main/java/com/metamatrix/common/queue/WorkerPool.java =================================================================== --- trunk/common-internal/src/main/java/com/metamatrix/common/queue/WorkerPool.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/common-internal/src/main/java/com/metamatrix/common/queue/WorkerPool.java 2009-03-30 20:55:34 UTC (rev 664) @@ -24,6 +24,7 @@ import java.util.List; import java.util.concurrent.Executor; +import java.util.concurrent.ScheduledFuture; import java.util.concurrent.TimeUnit; public interface WorkerPool extends Executor { @@ -32,7 +33,7 @@ List<Runnable> shutdownNow(); - void awaitTermination(long timeout, TimeUnit unit) + boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException; boolean isTerminated(); @@ -40,5 +41,16 @@ WorkerPoolStats getStats(); boolean hasWork(); + + int getPoolSize(); + + ScheduledFuture<?> schedule(Runnable command, + long delay, + TimeUnit unit); + + ScheduledFuture<?> scheduleAtFixedRate(Runnable command, + long initialDelay, + long period, + TimeUnit unit); } \ No newline at end of file Modified: trunk/common-internal/src/main/java/com/metamatrix/common/queue/WorkerPoolFactory.java =================================================================== --- trunk/common-internal/src/main/java/com/metamatrix/common/queue/WorkerPoolFactory.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/common-internal/src/main/java/com/metamatrix/common/queue/WorkerPoolFactory.java 2009-03-30 20:55:34 UTC (rev 664) @@ -22,12 +22,19 @@ package com.metamatrix.common.queue; +import java.util.ArrayList; +import java.util.Collections; +import java.util.IdentityHashMap; +import java.util.LinkedList; import java.util.List; -import java.util.concurrent.BlockingQueue; -import java.util.concurrent.LinkedBlockingQueue; +import java.util.Queue; +import java.util.Set; +import java.util.concurrent.Delayed; +import java.util.concurrent.FutureTask; import java.util.concurrent.RejectedExecutionException; -import java.util.concurrent.RejectedExecutionHandler; -import java.util.concurrent.ThreadFactory; +import java.util.concurrent.ScheduledFuture; +import java.util.concurrent.ScheduledThreadPoolExecutor; +import java.util.concurrent.SynchronousQueue; import java.util.concurrent.ThreadPoolExecutor; import java.util.concurrent.TimeUnit; import java.util.concurrent.atomic.AtomicInteger; @@ -39,208 +46,320 @@ import com.metamatrix.core.util.NamedThreadFactory; /** - * Creates WorkPools based upon {@link ThreadPoolExecutor} + * Creates named, queued, daemon Thread pools. + * <br/> + * The requirements are: + * <ol> + * <li>minimize thread creation</li> + * <li>allow for proper timeout of idle threads</li> + * <li>allow for queuing</li> + * </ol> + * <br/> + * A non-fifo (lifo) {@link SynchronousQueue} based {@link ThreadPoolExecutor} satisfies 1 and 2, but not 3. + * A bounded or unbound queue based {@link ThreadPoolExecutor} allows for 3, but will tend to create + * up to the maximum number of threads and makes no guarantee on thread scheduling. + * <br/> + * So the approach here is to use virtual thread pools off of single shared {@link SynchronousQueue} + * backed {@link ThreadPoolExecutor}. + * <br/> + * There is also only a single master scheduling thread with actual executions deferred to the calling + * WorkerPool. + * + * TODO: this probably needs to be re-thought, especially since the lifo ordering of a {@link SynchronousQueue} + * is not guaranteed behavior. also there's a race condition between previously retiring threads and new work - + * prior to being returned to the shared pool we can create extra threads if the shared pool is exhausted. + * TODO: bounded queuing - we never bothered bounding in the past with our worker pools, but reasonable + * defaults would be a good idea. */ public class WorkerPoolFactory { + private static ThreadPoolExecutor tpe = new ThreadPoolExecutor(0, + Integer.MAX_VALUE, 2, TimeUnit.MINUTES, + new SynchronousQueue<Runnable>(), new NamedThreadFactory("Worker")) { //$NON-NLS-1$ + @Override + protected void afterExecute(Runnable r, Throwable t) { + if (t != null) { + LogManager.logError(LogCommonConstants.CTX_POOLING, t, CommonPlugin.Util.getString("WorkerPool.uncaughtException")); //$NON-NLS-1$ + } + } + }; + + private static ScheduledThreadPoolExecutor stpe = new ScheduledThreadPoolExecutor(1, new NamedThreadFactory("Scheduler")); //$NON-NLS-1$ + /** - * Attempts to detect when new threads should be created without blocking. - * - * IMPORTANT NOTE: actual execution ordering is not guaranteed. + * TODO: purge user canceled scheduled tasks. */ - static final class ThreadReuseLinkedBlockingQueue extends - LinkedBlockingQueue<Runnable> { - private StatsCapturingThreadPoolExecutor executor; - - void setExecutor(StatsCapturingThreadPoolExecutor executor) { - this.executor = executor; - } + static class StatsCapturingSharedThreadPoolExecutor implements WorkerPool { - @Override - public boolean offer(Runnable o) { - if (executor.getPoolSize() + executor.getCompletedCount() >= executor.getSubmittedCount()) { - /* - * TODO: this strategy suffers from the same possible flaws as the previous implementation of - * WorkerPool. If the available threads are in the process of dying, we run the risk of - * queuing without starting another thread (fortunately the ThreadPoolExecutor itself will - * try to mitigate this case as well). - * - * Since this was never observed to be a problem before, we'll not initially worry about it with - * this implementation. - */ - return super.offer(o); + class ScheduledFutureTask extends FutureTask<Void> implements ScheduledFuture<Void> { + private ScheduledFuture<?> scheduledFuture; + private boolean periodic; + private volatile boolean running; + + public ScheduledFutureTask(Runnable runnable, boolean periodic) { + super(runnable, null); + this.periodic = periodic; } - return false; //trigger thread creation if possible - } + + public void setScheduledFuture(ScheduledFuture<?> scheduledFuture) { + scheduledTasks.add(this); + this.scheduledFuture = scheduledFuture; + } + + @Override + public long getDelay(TimeUnit unit) { + return this.scheduledFuture.getDelay(unit); + } - @Override - public boolean add(Runnable arg0) { - if (super.offer(arg0)) { - return true; + @Override + public int compareTo(Delayed o) { + return this.scheduledFuture.compareTo(o); } - throw new IllegalStateException("Queue full"); //$NON-NLS-1$ + + @Override + public boolean cancel(boolean mayInterruptIfRunning) { + this.scheduledFuture.cancel(false); + return super.cancel(mayInterruptIfRunning); + } + + public Runnable getParent() { + return new Runnable() { + @Override + public void run() { + if (running || terminated) { + return; + } + running = periodic; + execute(ScheduledFutureTask.this); + } + }; + } + + @Override + public void run() { + if (periodic) { + if (!this.runAndReset()) { + this.scheduledFuture.cancel(false); + scheduledTasks.remove(this); + } + running = false; + } else { + scheduledTasks.remove(this); + super.run(); + } + } } - } - - static class StatsCapturingThreadPoolExecutor extends ThreadPoolExecutor { - private AtomicInteger activeCount = new AtomicInteger(0); - private AtomicInteger submittedCount = new AtomicInteger(0); - private AtomicInteger completedCount = new AtomicInteger(0); + private volatile int activeCount; + private volatile int maxActiveCount; + private volatile int maxQueueSize; + private volatile boolean terminated; + private volatile int submittedCount; + private volatile int completedCount; + private Object poolLock = new Object(); + private AtomicInteger threadCounter = new AtomicInteger(); + private Set<Thread> threads = Collections.synchronizedSet(Collections.newSetFromMap(new IdentityHashMap<Thread, Boolean>())); + private Set<ScheduledFutureTask> scheduledTasks = Collections.synchronizedSet(Collections.newSetFromMap(new IdentityHashMap<ScheduledFutureTask, Boolean>())); - public StatsCapturingThreadPoolExecutor(int corePoolSize, - int maximumPoolSize, - long keepAliveTime, - TimeUnit unit, - BlockingQueue<Runnable> workQueue, - ThreadFactory threadFactory) { - super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory); - } + private String poolName; + private int maximumPoolSize; + private Queue<Runnable> queue = new LinkedList<Runnable>(); - @Override - protected void beforeExecute(Thread t, Runnable r) { - activeCount.getAndIncrement(); + public StatsCapturingSharedThreadPoolExecutor(String name, int maximumPoolSize) { + this.maximumPoolSize = maximumPoolSize; + this.poolName = name; } @Override - protected void afterExecute(Runnable r, Throwable t) { - if (t != null) { - LogManager.logError(LogCommonConstants.CTX_POOLING, t, CommonPlugin.Util.getString("WorkerPool.uncaughtException")); //$NON-NLS-1$ + public void execute(final Runnable command) { + boolean atMaxThreads = false; + boolean newMaxQueueSize = false; + synchronized (poolLock) { + checkForTermination(); + submittedCount++; + atMaxThreads = activeCount == maximumPoolSize; + if (atMaxThreads) { + queue.add(command); + int queueSize = queue.size(); + if (queueSize > maxQueueSize) { + atMaxThreads = true; + maxQueueSize = queueSize; + } + } else { + activeCount++; + maxActiveCount = Math.max(activeCount, maxActiveCount); + } } - activeCount.getAndDecrement(); - completedCount.getAndIncrement(); + if (atMaxThreads) { + if (newMaxQueueSize && maximumPoolSize > 1) { + LogManager.logWarning(LogCommonConstants.CTX_POOLING, CommonPlugin.Util.getString("WorkerPool.Max_thread", maximumPoolSize, poolName, maxQueueSize)); //$NON-NLS-1$ + } + return; + } + tpe.execute(new Runnable() { + @Override + public void run() { + Thread t = Thread.currentThread(); + threads.add(t); + String name = t.getName(); + t.setName(name + "_" + poolName + threadCounter.getAndIncrement()); //$NON-NLS-1$ + if (LogManager.isMessageToBeRecorded(LogCommonConstants.CTX_POOLING, MessageLevel.TRACE)) { + LogManager.logTrace(LogCommonConstants.CTX_POOLING, "Beginning work with virtual worker", t.getName()); //$NON-NLS-1$ + } + Runnable r = command; + while (r != null) { + boolean success = false; + try { + r.run(); + success = true; + } finally { + synchronized (poolLock) { + if (success) { + completedCount++; + r = queue.poll(); + } + if (r != null) { + continue; + } + threads.remove(t); + activeCount--; + if (activeCount == 0 && terminated) { + poolLock.notifyAll(); + } + } + t.setName(name); + } + } + }; + }); } - - @Override - public void execute(Runnable command) { - submittedCount.getAndIncrement(); - super.execute(command); + + private void checkForTermination() { + if (terminated) { + throw new RejectedExecutionException(); + } } - @Override public int getActiveCount() { - return activeCount.get(); + return activeCount; } public int getSubmittedCount() { - return submittedCount.get(); + return submittedCount; } public int getCompletedCount() { - return completedCount.get(); + return completedCount; } - } - - public static class DefaultThreadFactory extends NamedThreadFactory { + public int getPoolSize() { + return maximumPoolSize; + } - public DefaultThreadFactory(String name) { - super(name); + public boolean isTerminated() { + return terminated; } - - public Thread newThread(Runnable r) { - Thread result = super.newThread(r); - if (LogManager.isMessageToBeRecorded(LogCommonConstants.CTX_POOLING, MessageLevel.TRACE)) { - LogManager.logTrace(LogCommonConstants.CTX_POOLING, CommonPlugin.Util.getString("WorkerPool.New_thread", result.getName())); //$NON-NLS-1$ + + public void shutdown() { + this.terminated = true; + synchronized (scheduledTasks) { + for (ScheduledFuture<?> future : scheduledTasks) { + future.cancel(false); + } + scheduledTasks.clear(); } - return result; } - } - - static class ExecutorWorkerPool implements WorkerPool { - private String name; - private StatsCapturingThreadPoolExecutor executor; - - public ExecutorWorkerPool(final String name, StatsCapturingThreadPoolExecutor executor) { - this.name = name; - this.executor = executor; + public int getLargestPoolSize() { + return this.maxActiveCount; } - public void execute(Runnable r) { - this.executor.execute(r); - } - - public void awaitTermination(long timeout, TimeUnit unit) - throws InterruptedException { - this.executor.awaitTermination(timeout, unit); - } - + @Override public WorkerPoolStats getStats() { WorkerPoolStats stats = new WorkerPoolStats(); - stats.name = name; - stats.queued = executor.getQueue().size(); - stats.threads = executor.getPoolSize(); - stats.activeThreads = executor.getActiveCount(); - stats.totalSubmitted = executor.getSubmittedCount(); - //TODO: highestActiveThreads is misleading for pools that prefer to use new threads - stats.highestActiveThreads = executor.getLargestPoolSize(); - stats.totalCompleted = executor.getCompletedCount(); + stats.name = poolName; + stats.queued = queue.size(); + stats.threads = getPoolSize(); + stats.activeThreads = getActiveCount(); + stats.totalSubmitted = getSubmittedCount(); + stats.highestActiveThreads = getLargestPoolSize(); + stats.totalCompleted = getCompletedCount(); return stats; } - - public boolean isTerminated() { - return this.executor.isTerminated(); + + @Override + public boolean hasWork() { + synchronized (poolLock) { + return this.getSubmittedCount() - this.getCompletedCount() > 0 && !this.isTerminated(); + } } - public void shutdown() { - this.executor.shutdown(); + @Override + public List<Runnable> shutdownNow() { + this.shutdown(); + synchronized (poolLock) { + synchronized (threads) { + for (Thread t : threads) { + t.interrupt(); + } + } + List<Runnable> result = new ArrayList<Runnable>(queue); + queue.clear(); + return result; + } } + + @Override + public boolean awaitTermination(long timeout, TimeUnit unit) + throws InterruptedException { + long timeoutMillis = unit.toMillis(timeout); + long finalMillis = System.currentTimeMillis() + timeoutMillis; + synchronized (poolLock) { + while (this.activeCount > 0 || !terminated) { + if (timeoutMillis < 1) { + return false; + } + poolLock.wait(timeoutMillis); + timeoutMillis = finalMillis - System.currentTimeMillis(); + } + } + return true; + } - public boolean hasWork() { - return this.executor.getSubmittedCount() - this.executor.getCompletedCount() > 0 && !this.executor.isTerminated(); + @Override + public ScheduledFuture<?> schedule(final Runnable command, long delay, + TimeUnit unit) { + checkForTermination(); + ScheduledFutureTask sft = new ScheduledFutureTask(command, false); + synchronized (scheduledTasks) { + ScheduledFuture<?> future = stpe.schedule(sft.getParent(), delay, unit); + sft.setScheduledFuture(future); + return sft; + } } @Override - public List<Runnable> shutdownNow() { - return this.executor.shutdownNow(); + public ScheduledFuture<?> scheduleAtFixedRate(final Runnable command, + long initialDelay, long period, TimeUnit unit) { + checkForTermination(); + ScheduledFutureTask sft = new ScheduledFutureTask(command, true); + synchronized (scheduledTasks) { + ScheduledFuture<?> future = stpe.scheduleAtFixedRate(sft.getParent(), initialDelay, period, unit); + sft.setScheduledFuture(future); + return sft; + } } } - + /** * Creates a WorkerPool that prefers thread reuse over thread creation based upon the given parameters * * @param name * @param numThreads the maximum number of worker threads allowed - * @param keepAlive keepAlive time in milliseconds - NOT supported until JDK 1.6 for pools that don't prefer existing threads * @return */ public static WorkerPool newWorkerPool(String name, int numThreads, long keepAlive) { - return newWorkerPool(name, numThreads, keepAlive, true); + return new StatsCapturingSharedThreadPoolExecutor(name, numThreads); } - - public static WorkerPool newWorkerPool(String name, final int numThreads, long keepAlive, boolean preferExistingThreads) { - if (preferExistingThreads && numThreads > 1) { - final ThreadReuseLinkedBlockingQueue queue = new ThreadReuseLinkedBlockingQueue(); - StatsCapturingThreadPoolExecutor executor = - new StatsCapturingThreadPoolExecutor(0, numThreads, keepAlive, TimeUnit.MILLISECONDS, queue, new DefaultThreadFactory(name)) { - - @Override - public void execute(Runnable arg0) { - if (this.isShutdown()) { - //bypass the rejection handler - throw new RejectedExecutionException(); - } - super.execute(arg0); - } - - }; - queue.setExecutor(executor); - executor.setRejectedExecutionHandler(new RejectedExecutionHandler() { - public void rejectedExecution(Runnable arg0, - ThreadPoolExecutor arg1) { - try { - queue.add(arg0); - } catch (IllegalStateException e) { - throw new RejectedExecutionException(e); - } - } - }); - return new ExecutorWorkerPool(name, executor); - } - StatsCapturingThreadPoolExecutor executor = new StatsCapturingThreadPoolExecutor(numThreads, numThreads, keepAlive, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<Runnable>(), new DefaultThreadFactory(name)); - executor.allowCoreThreadTimeOut(true); - return new ExecutorWorkerPool(name, executor); - } - + } Modified: trunk/common-internal/src/main/resources/com/metamatrix/common/i18n.properties =================================================================== --- trunk/common-internal/src/main/resources/com/metamatrix/common/i18n.properties 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/common-internal/src/main/resources/com/metamatrix/common/i18n.properties 2009-03-30 20:55:34 UTC (rev 664) @@ -3100,4 +3100,5 @@ VDBDefnXMLHelper.Unable_to_read_defn_file=Unable to read DEF file. WorkerPool.uncaughtException=Uncaught exception in worker pool -WorkerPool.New_thread=New work thread created with name {0} \ No newline at end of file +WorkerPool.New_thread=New work thread created with name {0} +WorkerPool.Max_thread=Reached maximum thread count "{0}" for worker pool "{1}" with a queue size of "{2}". \ No newline at end of file Modified: trunk/common-internal/src/test/java/com/metamatrix/common/queue/TestQueueWorkerPool.java =================================================================== --- trunk/common-internal/src/test/java/com/metamatrix/common/queue/TestQueueWorkerPool.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/common-internal/src/test/java/com/metamatrix/common/queue/TestQueueWorkerPool.java 2009-03-30 20:55:34 UTC (rev 664) @@ -22,24 +22,21 @@ package com.metamatrix.common.queue; +import static org.junit.Assert.*; + +import java.util.ArrayList; +import java.util.concurrent.ExecutionException; import java.util.concurrent.RejectedExecutionException; +import java.util.concurrent.ScheduledFuture; import java.util.concurrent.TimeUnit; -import junit.framework.*; +import org.junit.Test; /** */ -public class TestQueueWorkerPool extends TestCase { +public class TestQueueWorkerPool { - /** - * Constructor for TestQueueWorkerPool. - * @param arg0 - */ - public TestQueueWorkerPool(String arg0) { - super(arg0); - } - - public void testQueuing() throws Exception { + @Test public void testQueuing() throws Exception { final long SINGLE_WAIT = 50; final int WORK_ITEMS = 10; final int MAX_THREADS = 5; @@ -58,7 +55,7 @@ assertEquals("Expected threads to be maxed out", MAX_THREADS, stats.highestActiveThreads); //$NON-NLS-1$ } - public void testThreadReuse() throws Exception { + @Test public void testThreadReuse() throws Exception { final long SINGLE_WAIT = 50; final long NUM_THREADS = 5; @@ -81,15 +78,78 @@ pool.awaitTermination(1000, TimeUnit.MILLISECONDS); } - public void testShutdown() throws Exception { + @Test(expected=RejectedExecutionException.class) public void testShutdown() throws Exception { final WorkerPool pool = WorkerPoolFactory.newWorkerPool("test", 5, 120000); //$NON-NLS-1$ pool.shutdown(); - try { - pool.execute(new FakeWorkItem(1)); - fail("expected exception"); //$NON-NLS-1$ - } catch (RejectedExecutionException e) { - - } + pool.execute(new FakeWorkItem(1)); } + + @Test public void testScheduleCancel() throws Exception { + final WorkerPool pool = WorkerPoolFactory.newWorkerPool("test", 5, 120000); //$NON-NLS-1$ + ScheduledFuture<?> future = pool.scheduleAtFixedRate(new Runnable() { + @Override + public void run() { + } + }, 0, 5, TimeUnit.MILLISECONDS); + future.cancel(true); + assertFalse(future.cancel(true)); + } + + @Test public void testSchedule() throws Exception { + final WorkerPool pool = WorkerPoolFactory.newWorkerPool("test", 5, 120000); //$NON-NLS-1$ + final ArrayList<String> result = new ArrayList<String>(); + ScheduledFuture<?> future = pool.schedule(new Runnable() { + @Override + public void run() { + result.add("hello"); //$NON-NLS-1$ + } + }, 5, TimeUnit.MILLISECONDS); + future.cancel(true); + Thread.sleep(10); + assertEquals(0, result.size()); + future = pool.schedule(new Runnable() { + @Override + public void run() { + result.add("hello"); //$NON-NLS-1$ + } + }, 5, TimeUnit.MILLISECONDS); + Thread.sleep(10); + pool.shutdown(); + pool.awaitTermination(1000, TimeUnit.MILLISECONDS); + assertEquals(1, result.size()); + } + + @Test(expected=ExecutionException.class) public void testScheduleException() throws Exception { + final WorkerPool pool = WorkerPoolFactory.newWorkerPool("test", 5, 120000); //$NON-NLS-1$ + ScheduledFuture<?> future = pool.schedule(new Runnable() { + @Override + public void run() { + throw new RuntimeException(); + } + }, 0, TimeUnit.MILLISECONDS); + future.get(); + } + + /** + * Here each execution exceeds the period, so only half the number of executions are expected. + */ + @Test public void testScheduleRepeated() throws Exception { + final WorkerPool pool = WorkerPoolFactory.newWorkerPool("test", 5, 120000); //$NON-NLS-1$ + final ArrayList<String> result = new ArrayList<String>(); + ScheduledFuture<?> future = pool.scheduleAtFixedRate(new Runnable() { + @Override + public void run() { + result.add("hello"); //$NON-NLS-1$ + try { + Thread.sleep(7); + } catch (InterruptedException e) { + throw new RuntimeException(e); + } + } + }, 0, 5, TimeUnit.MILLISECONDS); + Thread.sleep(99); + future.cancel(true); + assertEquals(10, result.size()); + } } Modified: trunk/connector-api/src/main/java/org/teiid/connector/api/ConnectorEnvironment.java =================================================================== --- trunk/connector-api/src/main/java/org/teiid/connector/api/ConnectorEnvironment.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/connector-api/src/main/java/org/teiid/connector/api/ConnectorEnvironment.java 2009-03-30 20:55:34 UTC (rev 664) @@ -24,6 +24,9 @@ import java.util.Properties; import java.util.concurrent.Executor; +import java.util.concurrent.ScheduledFuture; +import java.util.concurrent.ScheduledThreadPoolExecutor; +import java.util.concurrent.TimeUnit; import org.teiid.connector.language.ILanguageFactory; @@ -67,4 +70,20 @@ * conversions supplied by the Connector API. */ TypeFacility getTypeFacility(); + + /** + * Schedule a command for repeated execution with the same contract as + * {@link ScheduledThreadPoolExecutor#scheduleAtFixedRate(Runnable, long, long, TimeUnit)} + * Executions will not happen concurrently. If an execution takes longer than a period, + * the next execution will take place on the first period interval after completion. + * @param command + * @param initialDelay + * @param period + * @param unit + * @return + */ + ScheduledFuture<?> scheduleAtFixedRate(Runnable command, + long initialDelay, + long period, + TimeUnit unit); } Modified: trunk/connectors/connector-salesforce/src/test/java/com/metamatrix/connector/salesforce/TestConnector.java =================================================================== --- trunk/connectors/connector-salesforce/src/test/java/com/metamatrix/connector/salesforce/TestConnector.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/connectors/connector-salesforce/src/test/java/com/metamatrix/connector/salesforce/TestConnector.java 2009-03-30 20:55:34 UTC (rev 664) @@ -21,13 +21,12 @@ */ package com.metamatrix.connector.salesforce; +import junit.framework.TestCase; + import org.teiid.connector.api.ConnectorEnvironment; import org.teiid.connector.api.ConnectorException; import org.teiid.connector.api.ExecutionContext; -import junit.framework.TestCase; - -import com.metamatrix.connector.salesforce.connection.SalesforceConnection; import com.metamatrix.connector.salesforce.test.util.ObjectFactory; public class TestConnector extends TestCase { @@ -53,12 +52,6 @@ noCredConnector.start(env2); } - public void testGetConnection() throws Exception { - ExecutionContext secContext = ObjectFactory.getDefaultSecurityContext(); - SalesforceConnection connection = (SalesforceConnection) connector.getConnection(secContext); - assertNotNull("the connection is null", connection); - } - /* public void testGetConnectionTrustedToken() { ExecutionContext secContext = TestObjectFactory.getTokenExecutionContext(); @@ -136,7 +129,6 @@ public void testGetState() { assertNotNull(connector.getState()); - assertTrue(connector.getState() instanceof ConnectorState); } public void testStopNoInit() { Modified: trunk/engine/src/main/java/org/teiid/dqp/internal/datamgr/impl/ConnectorEnvironmentImpl.java =================================================================== --- trunk/engine/src/main/java/org/teiid/dqp/internal/datamgr/impl/ConnectorEnvironmentImpl.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/engine/src/main/java/org/teiid/dqp/internal/datamgr/impl/ConnectorEnvironmentImpl.java 2009-03-30 20:55:34 UTC (rev 664) @@ -27,6 +27,8 @@ package org.teiid.dqp.internal.datamgr.impl; import java.util.Properties; +import java.util.concurrent.ScheduledFuture; +import java.util.concurrent.TimeUnit; import org.teiid.connector.api.ConnectorEnvironment; import org.teiid.connector.api.ConnectorLogger; @@ -43,7 +45,28 @@ */ public class ConnectorEnvironmentImpl implements ConnectorEnvironment { - private static final TypeFacility TYPE_FACILITY = new TypeFacilityImpl(); + private final class ContextClassLoaderPreservingRunnable implements + Runnable { + private final Runnable arg0; + private final ClassLoader cl = Thread.currentThread().getContextClassLoader(); + + private ContextClassLoaderPreservingRunnable(Runnable arg0) { + this.arg0 = arg0; + } + + @Override + public void run() { + ClassLoader current = Thread.currentThread().getContextClassLoader(); + Thread.currentThread().setContextClassLoader(cl); + try { + arg0.run(); + } finally { + Thread.currentThread().setContextClassLoader(current); + } + } + } + + private static final TypeFacility TYPE_FACILITY = new TypeFacilityImpl(); private ConnectorLogger logger; private Properties properties; @@ -117,12 +140,20 @@ } @Override - public void execute(Runnable arg0) { + public void execute(Runnable command) { if (this.workerPool != null) { - this.workerPool.execute(arg0); + this.workerPool.execute(new ContextClassLoaderPreservingRunnable(command)); } else { - arg0.run(); + command.run(); } - } + + @Override + public ScheduledFuture<?> scheduleAtFixedRate(Runnable command, + long initialDelay, long period, TimeUnit unit) { + if (this.workerPool != null) { + return this.workerPool.scheduleAtFixedRate(new ContextClassLoaderPreservingRunnable(command), initialDelay, period, unit); + } + return null; + } } Modified: trunk/engine/src/main/java/org/teiid/dqp/internal/datamgr/impl/ConnectorManager.java =================================================================== --- trunk/engine/src/main/java/org/teiid/dqp/internal/datamgr/impl/ConnectorManager.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/engine/src/main/java/org/teiid/dqp/internal/datamgr/impl/ConnectorManager.java 2009-03-30 20:55:34 UTC (rev 664) @@ -35,9 +35,8 @@ import java.util.Collection; import java.util.Collections; import java.util.Properties; -import java.util.Timer; -import java.util.TimerTask; import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.TimeUnit; import javax.transaction.xa.XAResource; @@ -123,9 +122,6 @@ // known requests private ConcurrentHashMap<AtomicRequestID, ConnectorWorkItem> requestStates = new ConcurrentHashMap<AtomicRequestID, ConnectorWorkItem>(); - // Lazily created and used for asynch query execution - private Timer timer; - private Properties props; private ClassLoader classloader; @@ -239,7 +235,7 @@ } workItem.requestClose(); } - + /** * Schedule a task to be executed after the specified delay (in milliseconds) * @param task The task to execute @@ -247,17 +243,12 @@ * @since 4.3.3 */ public void scheduleTask(final AsynchConnectorWorkItem state, long delay) { - synchronized(this) { - if(this.timer == null) { - this.timer = new Timer("AsynchRequestThread", true); //$NON-NLS-1$ - } - } - - this.timer.schedule(new TimerTask() { - @Override - public void run() { - state.requestMore(); - }}, delay); + this.connectorWorkerPool.schedule(new Runnable() { + @Override + public void run() { + state.requestMore(); + } + }, delay, TimeUnit.MILLISECONDS); } /** @@ -294,7 +285,6 @@ throw new ApplicationLifecycleException("ConnectorManager.cannot_restart"); //$NON-NLS-1$ } connectorName = props.getProperty(ConnectorPropertyNames.CONNECTOR_BINDING_NAME, "Unknown_Binding_Name"); //$NON-NLS-1$ - String connIDStr = props.getProperty(ConnectorPropertyNames.CONNECTOR_ID); connectorID = new ConnectorID(connIDStr); @@ -527,11 +517,6 @@ } - if(this.timer != null) { - this.timer.cancel(); - this.timer = null; - } - if (this.rsCache != null) { this.rsCache.shutDown(); this.rsCache = null; Modified: trunk/engine/src/main/java/org/teiid/dqp/internal/pooling/connector/ConnectionPool.java =================================================================== --- trunk/engine/src/main/java/org/teiid/dqp/internal/pooling/connector/ConnectionPool.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/engine/src/main/java/org/teiid/dqp/internal/pooling/connector/ConnectionPool.java 2009-03-30 20:55:34 UTC (rev 664) @@ -32,13 +32,12 @@ import java.util.List; import java.util.Map; import java.util.Properties; -import java.util.Timer; -import java.util.TimerTask; import java.util.concurrent.Semaphore; import java.util.concurrent.TimeUnit; import org.teiid.connector.DataPlugin; import org.teiid.connector.api.Connection; +import org.teiid.connector.api.ConnectorEnvironment; import org.teiid.connector.api.ConnectorException; import org.teiid.connector.api.ConnectorIdentity; import org.teiid.connector.api.ExecutionContext; @@ -122,8 +121,6 @@ private Map<ConnectorIdentity, ConnectionsForId> idConnections = new HashMap<ConnectorIdentity, ConnectionsForId>(); private Map<ConnectionWrapper, ConnectorIdentity> reverseIdConnections = new IdentityHashMap<ConnectionWrapper, ConnectorIdentity>(); - private Timer cleaningThread; - private Object lock = new Object(); private Semaphore poolSemaphore; @@ -148,8 +145,9 @@ * @param poolProperties Properties of the pool as defined in this class. May be empty, but may not be null. * @throws ConnectionPoolException if the connection pool fails to initialize. */ - public void initialize(Properties poolProperties) throws ConnectionPoolException { - ArgCheck.isNotNull(poolProperties); + public void initialize(ConnectorEnvironment env) throws ConnectionPoolException { + ArgCheck.isNotNull(env); + Properties poolProperties = env.getProperties(); maxConnections = PropertiesUtils.getIntProperty(poolProperties, MAX_CONNECTIONS, DEFAULT_MAX_CONNECTION); if (maxConnections < 1) { @@ -170,13 +168,11 @@ testConnectInterval = PropertiesUtils.getIntProperty(poolProperties, SOURCE_CONNECTION_TEST_INTERVAL, DEFAULT_SOURCE_CONNECTION_TEST_INTERVAL); if (enableShrinking && !this.shuttingDownPool) { - this.cleaningThread = new Timer("ConnectionPoolCleaningThread", true); //$NON-NLS-1$ - cleaningThread.schedule(new TimerTask() { - @Override - public void run() { - ConnectionPool.this.cleanUp(false); - } - }, cleaningInterval, cleaningInterval); + env.scheduleAtFixedRate(new Runnable() { + public void run() { + cleanUp(false); + }; + }, cleaningInterval, cleaningInterval, TimeUnit.MILLISECONDS); } LogManager.logInfo(CTX_CONNECTOR, DataPlugin.Util.getString("ConnectionPool.Connection_pool_created_1")); //$NON-NLS-1$ @@ -216,7 +212,7 @@ ConnectionsForId connLists = null; synchronized (this.lock) { - connLists = (ConnectionsForId) this.idConnections.get(id); + connLists = this.idConnections.get(id); if ( connLists == null ) { connLists = new ConnectionsForId(); if (this.maxConnectionsForEachID < this.maxConnections) { @@ -325,7 +321,7 @@ if (connsForId.unused.isEmpty()) { continue; } - ConnectionWrapper conn = (ConnectionWrapper) connsForId.unused.removeFirst(); + ConnectionWrapper conn = connsForId.unused.removeFirst(); closeSourceConnection(conn, id); break; } @@ -354,8 +350,8 @@ ConnectionsForId connLists = null; ConnectorIdentity id = null; synchronized (this.lock) { - id = (ConnectorIdentity) this.reverseIdConnections.get(connection); - connLists = (ConnectionsForId) this.idConnections.get(id); + id = this.reverseIdConnections.get(connection); + connLists = this.idConnections.get(id); } if (connLists == null) { @@ -398,11 +394,6 @@ shuttingDownPool = true; - //close cleaning thread - if (this.cleaningThread != null) { - this.cleaningThread.cancel(); - } - this.cleanUp(true); } @@ -459,8 +450,8 @@ ConnectorIdentity id = null; ConnectionsForId connLists = null; synchronized (this.lock) { - id = (ConnectorIdentity) this.reverseIdConnections.get(connection); - connLists = (ConnectionsForId) this.idConnections.get(id); + id = this.reverseIdConnections.get(connection); + connLists = this.idConnections.get(id); } if ( connLists != null ) { synchronized (connLists) { @@ -475,8 +466,8 @@ ConnectorIdentity id = null; ConnectionsForId connLists = null; synchronized (this.lock) { - id = (ConnectorIdentity) this.reverseIdConnections.get(connection); - connLists = (ConnectionsForId) this.idConnections.get(id); + id = this.reverseIdConnections.get(connection); + connLists = this.idConnections.get(id); } if ( connLists != null ) { synchronized (connLists) { Modified: trunk/engine/src/main/java/org/teiid/dqp/internal/pooling/connector/PooledConnector.java =================================================================== --- trunk/engine/src/main/java/org/teiid/dqp/internal/pooling/connector/PooledConnector.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/engine/src/main/java/org/teiid/dqp/internal/pooling/connector/PooledConnector.java 2009-03-30 20:55:34 UTC (rev 664) @@ -25,7 +25,6 @@ import java.util.Collections; import java.util.HashMap; import java.util.Map; -import java.util.Properties; import javax.transaction.RollbackException; import javax.transaction.Synchronization; @@ -101,10 +100,9 @@ @Override public void start(ConnectorEnvironment environment) throws ConnectorException { - Properties p = environment.getProperties(); - pool.initialize(p); + pool.initialize(environment); if (xaPool != null) { - xaPool.initialize(p); + xaPool.initialize(environment); } super.start(environment); } Modified: trunk/engine/src/main/java/org/teiid/dqp/internal/process/RequestWorkItem.java =================================================================== --- trunk/engine/src/main/java/org/teiid/dqp/internal/process/RequestWorkItem.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/engine/src/main/java/org/teiid/dqp/internal/process/RequestWorkItem.java 2009-03-30 20:55:34 UTC (rev 664) @@ -196,9 +196,7 @@ protected void process() { DQPWorkContext.setWorkContext(this.dqpWorkContext); - if (LogManager.isMessageToBeRecorded(LogConstants.CTX_DQP, MessageLevel.DETAIL)) { - LogManager.logDetail(LogConstants.CTX_DQP, "############# PW PROCESSING on " + requestID + " with state "+ state +" ###########"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ - } + LogManager.logDetail(LogConstants.CTX_DQP, "############# PW PROCESSING on", requestID, "with state", state, "###########"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ try { if (this.state == ProcessingState.NEW) { @@ -217,32 +215,30 @@ } } catch (BlockedOnMemoryException e) { moreWork(false); - if (LogManager.isMessageToBeRecorded(LogConstants.CTX_DQP, MessageLevel.DETAIL)) { - LogManager.logDetail(LogConstants.CTX_DQP, "############# PW EXITING on " + requestID + " - reenqueueing for more processing due to lack of available memory ###########"); //$NON-NLS-1$ //$NON-NLS-2$ - } + LogManager.logDetail(LogConstants.CTX_DQP, "############# PW EXITING on", requestID, "- reenqueueing for more processing due to lack of available memory ###########"); //$NON-NLS-1$ //$NON-NLS-2$ } catch (BlockedException e) { - if (LogManager.isMessageToBeRecorded(LogConstants.CTX_DQP, MessageLevel.DETAIL)) { - LogManager.logDetail(LogConstants.CTX_DQP, "############# PW EXITING on " + requestID + " - processor blocked ###########"); //$NON-NLS-1$ //$NON-NLS-2$ - } + LogManager.logDetail(LogConstants.CTX_DQP, "############# PW EXITING on", requestID, "- processor blocked ###########"); //$NON-NLS-1$ //$NON-NLS-2$ } catch (Throwable e) { + LogManager.logDetail(LogConstants.CTX_DQP, e, "############# PW EXITING on", requestID, "- error occurred ###########"); //$NON-NLS-1$ //$NON-NLS-2$ //if there is a cache, remove temp results if there is any if(this.rsCache != null){ rsCache.removeTempResults(cid); } - if (isCanceled()) { - if (LogManager.isMessageToBeRecorded(LogConstants.CTX_DQP, MessageLevel.DETAIL)) { - LogManager.logDetail(LogConstants.CTX_DQP, e, "############# PW EXITING on " + requestID + " - error occurred ###########"); //$NON-NLS-1$ //$NON-NLS-2$ - } - } else { + if (!isCanceled()) { logCommandError(); //Case 5558: Differentiate between system level errors and //processing errors. Only log system level errors as errors, //log the processing errors as warnings only if(e instanceof MetaMatrixProcessingException) { - LogManager.logWarning(LogConstants.CTX_DQP, e, "############# PW EXITING on " + requestID + " - error occurred ###########"); //$NON-NLS-1$ //$NON-NLS-2$ + Throwable cause = e; + while (cause.getCause() != null) { + cause = e.getCause(); + } + StackTraceElement elem = cause.getStackTrace()[0]; + LogManager.logWarning(LogConstants.CTX_DQP, DQPPlugin.Util.getString("ProcessWorker.processing_error", e.getMessage(), requestID, e.getClass().getName(), elem)); //$NON-NLS-1$ }else { - LogManager.logError(LogConstants.CTX_DQP, e, "############# PW EXITING on " + requestID + " - error occurred ###########"); //$NON-NLS-1$ //$NON-NLS-2$ + LogManager.logError(LogConstants.CTX_DQP, e, DQPPlugin.Util.getString("ProcessWorker.error", requestID)); //$NON-NLS-1$ } } @@ -536,10 +532,7 @@ } private void sendError() { - if (LogManager.isMessageToBeRecorded(LogConstants.CTX_DQP, MessageLevel.DETAIL)) { - LogManager.logDetail(LogConstants.CTX_DQP, processingException, DQPPlugin.Util.getString("ProcessWorker.send_error", requestID)); //$NON-NLS-1$ - } - + LogManager.logDetail(LogConstants.CTX_DQP, processingException, "Sedning error to client", requestID); //$NON-NLS-1$ ResultsMessage response = new ResultsMessage(requestMsg); response.setException(processingException); setAnalysisRecords(response, analysisRecord); Modified: trunk/engine/src/main/resources/com/metamatrix/dqp/i18n.properties =================================================================== --- trunk/engine/src/main/resources/com/metamatrix/dqp/i18n.properties 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/engine/src/main/resources/com/metamatrix/dqp/i18n.properties 2009-03-30 20:55:34 UTC (rev 664) @@ -151,6 +151,8 @@ ProcessWorker.Failed_to_deliver_response_for_{0}=Failed to deliver response for {0}. Client connection may have been closed. ProcessWorker.ProcessWorker.Failed_starting_processing._1=ProcessWorker.Failed_starting_processing. ProcessWorker.failed_rollback=Failed to properly rollback autowrap transaction properly +ProcessWorker.error=Unexpected exception for request {0} +ProcessWorker.processing_error=Processing exception ''{0}'' for request {1}. Exception type {2} throw from {3}. Enable detail logging to see the entire stacktrace. SharedCacheFinder.Didnt_find_caps=Unable to find capabilities for {0} Modified: trunk/engine/src/test/java/org/teiid/dqp/internal/pooling/connector/TestConnectionPool.java =================================================================== --- trunk/engine/src/test/java/org/teiid/dqp/internal/pooling/connector/TestConnectionPool.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/engine/src/test/java/org/teiid/dqp/internal/pooling/connector/TestConnectionPool.java 2009-03-30 20:55:34 UTC (rev 664) @@ -22,31 +22,42 @@ package org.teiid.dqp.internal.pooling.connector; +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertTrue; +import static org.junit.Assert.fail; + import java.util.ArrayList; import java.util.List; import java.util.Properties; +import org.junit.AfterClass; +import org.junit.Before; +import org.junit.Test; +import org.mockito.Mockito; +import org.teiid.connector.api.ConnectorEnvironment; +import org.teiid.connector.api.ConnectorLogger; import org.teiid.connector.api.ExecutionContext; import org.teiid.connector.api.MappedUserIdentity; +import org.teiid.dqp.internal.datamgr.impl.ConnectorEnvironmentImpl; import org.teiid.dqp.internal.datamgr.impl.ConnectorWrapper; import org.teiid.dqp.internal.datamgr.impl.ExecutionContextImpl; -import org.teiid.dqp.internal.pooling.connector.ConnectionPool; -import org.teiid.dqp.internal.pooling.connector.ConnectionPoolException; -import org.teiid.dqp.internal.pooling.connector.ConnectionWrapper; -import junit.framework.TestCase; +import com.metamatrix.common.application.ApplicationEnvironment; +import com.metamatrix.common.queue.WorkerPool; +import com.metamatrix.common.queue.WorkerPoolFactory; -public class TestConnectionPool extends TestCase{ +public class TestConnectionPool { private ConnectionPool userIDPool; private ConnectionPool singleIDPool; private static ArrayList<Exception> EXCEPTIONS = new ArrayList<Exception>(); - - public TestConnectionPool(String name) { - super(name); + private static WorkerPool pool = WorkerPoolFactory.newWorkerPool(TestConnectionPool.class.getSimpleName(), 1, 1000); + + @AfterClass public static void tearDownOnce() { + pool.shutdownNow(); } - public void setUp() throws Exception{ + @Before public void setUp() throws Exception{ FakeSourceConnectionFactory.alive = true; singleIDPool = new ConnectionPool(new ConnectorWrapper(new FakeSourceConnectionFactory())); @@ -58,12 +69,17 @@ poolProperties.put(ConnectionPool.LIVE_AND_UNUSED_TIME, "1"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.WAIT_FOR_SOURCE_TIME, "500"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.CLEANING_INTERVAL, "1"); //$NON-NLS-1$ - poolProperties.put(ConnectionPool.ENABLE_SHRINKING, "true"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.SOURCE_CONNECTION_TEST_INTERVAL, "-1"); //$NON-NLS-1$ - - singleIDPool.initialize(poolProperties); - userIDPool.initialize(poolProperties); + ConnectorEnvironment env = createConnectorEnvironment(poolProperties); + singleIDPool.initialize(env); + userIDPool.initialize(env); } + + private ConnectorEnvironment createConnectorEnvironment( + Properties poolProperties) { + ConnectorEnvironment env = new ConnectorEnvironmentImpl(poolProperties, Mockito.mock(ConnectorLogger.class), new ApplicationEnvironment(), pool); + return env; + } public void tearDown() throws Exception{ singleIDPool.shutDown(); @@ -79,7 +95,7 @@ } //=== tests ===// - public void testPoolUsingSingleIdentity() throws Exception { + @Test public void testPoolUsingSingleIdentity() throws Exception { ExecutionContext context = createContext("x", false);//$NON-NLS-1$ ConnectionWrapper conn1 = singleIDPool.obtain(context); @@ -99,7 +115,7 @@ assertEquals(3, singleIDPool.getTotalConnectionCount()); } - public void testMaxConnectionTest() throws Exception { + @Test public void testMaxConnectionTest() throws Exception { ConnectionPool pool = new ConnectionPool(new ConnectorWrapper(new FakeSourceConnectionFactory())); Properties poolProperties = new Properties(); @@ -108,18 +124,17 @@ poolProperties.put(ConnectionPool.LIVE_AND_UNUSED_TIME, "1"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.WAIT_FOR_SOURCE_TIME, "500"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.CLEANING_INTERVAL, "1"); //$NON-NLS-1$ - poolProperties.put(ConnectionPool.ENABLE_SHRINKING, "true"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.SOURCE_CONNECTION_TEST_INTERVAL, "-1"); //$NON-NLS-1$ try { - pool.initialize(poolProperties); + pool.initialize(createConnectorEnvironment(poolProperties)); fail("should have failed to use 0 as max connections"); //$NON-NLS-1$ }catch (ConnectionPoolException e) { // pass } } - public void testMaxConnectionTest1() throws Exception { + @Test public void testMaxConnectionTest1() throws Exception { ConnectionPool pool = new ConnectionPool(new ConnectorWrapper(new FakeSourceConnectionFactory())); Properties poolProperties = new Properties(); @@ -128,18 +143,17 @@ poolProperties.put(ConnectionPool.LIVE_AND_UNUSED_TIME, "1"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.WAIT_FOR_SOURCE_TIME, "500"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.CLEANING_INTERVAL, "1"); //$NON-NLS-1$ - poolProperties.put(ConnectionPool.ENABLE_SHRINKING, "true"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.SOURCE_CONNECTION_TEST_INTERVAL, "-1"); //$NON-NLS-1$ try { - pool.initialize(poolProperties); + pool.initialize(createConnectorEnvironment(poolProperties)); fail("should have failed to use 0 as max connections"); //$NON-NLS-1$ }catch (ConnectionPoolException e) { // pass } } - public void testMaxConnectionTest2() throws Exception { + @Test public void testMaxConnectionTest2() throws Exception { ConnectionPool pool = new ConnectionPool(new ConnectorWrapper(new FakeSourceConnectionFactory())); Properties poolProperties = new Properties(); @@ -148,18 +162,17 @@ poolProperties.put(ConnectionPool.LIVE_AND_UNUSED_TIME, "1"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.WAIT_FOR_SOURCE_TIME, "500"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.CLEANING_INTERVAL, "1"); //$NON-NLS-1$ - poolProperties.put(ConnectionPool.ENABLE_SHRINKING, "true"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.SOURCE_CONNECTION_TEST_INTERVAL, "-1"); //$NON-NLS-1$ try { - pool.initialize(poolProperties); + pool.initialize(createConnectorEnvironment(poolProperties)); fail("should have failed to use 0 as max connections"); //$NON-NLS-1$ }catch (ConnectionPoolException e) { // pass } } - public void testMessageWhenPoolMaxedOutPerIdentity() throws Exception { + @Test public void testMessageWhenPoolMaxedOutPerIdentity() throws Exception { ExecutionContext context = createContext("x", false);//$NON-NLS-1$ // Max out the pool - 5 connections for same ID @@ -176,7 +189,7 @@ } } - public void testMessageWhenPoolTimedOut() throws Exception { + @Test public void testMessageWhenPoolTimedOut() throws Exception { FakeSourceConnectionFactory.alive = true; singleIDPool = new ConnectionPool(new ConnectorWrapper(new FakeSourceConnectionFactory())); @@ -186,9 +199,9 @@ poolProperties.put(ConnectionPool.LIVE_AND_UNUSED_TIME, "1"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.WAIT_FOR_SOURCE_TIME, "1"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.CLEANING_INTERVAL, "1"); //$NON-NLS-1$ - poolProperties.put(ConnectionPool.ENABLE_SHRINKING, "true"); //$NON-NLS-1$ + poolProperties.put(ConnectionPool.ENABLE_SHRINKING, Boolean.FALSE.toString()); poolProperties.put(ConnectionPool.SOURCE_CONNECTION_TEST_INTERVAL, "-1"); //$NON-NLS-1$ - singleIDPool.initialize(poolProperties); + singleIDPool.initialize(createConnectorEnvironment(poolProperties)); ExecutionContext context = createContext("x", false);//$NON-NLS-1$ @@ -204,7 +217,7 @@ } } - public void testPoolUsingUserIdentity() throws Exception { + @Test public void testPoolUsingUserIdentity() throws Exception { ExecutionContext context1 = createContext("Jack", true); //$NON-NLS-1$ ExecutionContext context2 = createContext("Tom", true); //$NON-NLS-1$ userIDPool.obtain(context1); @@ -223,7 +236,7 @@ assertEquals(3, userIDPool.getTotalConnectionCount()); } - public void testPoolCleanUp() throws Exception { + @Test public void testPoolCleanUp() throws Exception { ExecutionContext context = createContext("x", false); //$NON-NLS-1$ ConnectionWrapper conn1 = singleIDPool.obtain(context); @@ -247,7 +260,7 @@ assertEquals(2, singleIDPool.getTotalConnectionCount()); } - public void testMultiThreading() throws Exception { + @Test public void testMultiThreading() throws Exception { EXCEPTIONS.clear(); int runnerNumber = 20; int connPerRunner = 20; @@ -316,7 +329,7 @@ } } - public void testMaxWithUserPool() throws Exception { + @Test public void testMaxWithUserPool() throws Exception { userIDPool = new ConnectionPool(new ConnectorWrapper(new FakeUserIdentityConnectionFactory())); Properties poolProperties = new Properties(); poolProperties.put(ConnectionPool.MAX_CONNECTIONS, "1"); //$NON-NLS-1$ @@ -326,7 +339,7 @@ poolProperties.put(ConnectionPool.CLEANING_INTERVAL, "1000"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.ENABLE_SHRINKING, "false"); //$NON-NLS-1$ poolProperties.put(ConnectionPool.SOURCE_CONNECTION_TEST_INTERVAL, "-1"); //$NON-NLS-1$ - userIDPool.initialize(poolProperties); + userIDPool.initialize(createConnectorEnvironment(poolProperties)); ConnectionWrapper conn = userIDPool.obtain(createContext("x", true)); //$NON-NLS-1$ userIDPool.release(conn,false); Modified: trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/SocketVMController.java =================================================================== --- trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/SocketVMController.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/SocketVMController.java 2009-03-30 20:55:34 UTC (rev 664) @@ -34,8 +34,6 @@ import com.metamatrix.common.log.LogManager; import com.metamatrix.common.messaging.MessageBus; import com.metamatrix.common.net.ServerSocketConfiguration; -import com.metamatrix.common.queue.WorkerPool; -import com.metamatrix.common.queue.WorkerPoolFactory; import com.metamatrix.common.queue.WorkerPoolStats; import com.metamatrix.common.util.LogCommonConstants; import com.metamatrix.common.util.PropertiesUtils; @@ -43,9 +41,9 @@ import com.metamatrix.platform.PlatformPlugin; import com.metamatrix.platform.registry.ClusteredRegistryState; import com.metamatrix.platform.util.PlatformProxyHelper; +import com.metamatrix.platform.vm.controller.ProcessController; import com.metamatrix.platform.vm.controller.ServerEvents; import com.metamatrix.platform.vm.controller.SocketListenerStats; -import com.metamatrix.platform.vm.controller.ProcessController; import com.metamatrix.server.Configuration; import com.metamatrix.server.HostManagement; import com.metamatrix.server.Main; @@ -60,20 +58,16 @@ private static final String SERVER_PORT = VMComponentDefnType.SERVER_PORT; private static final String MAX_THREADS = VMComponentDefnType.MAX_THREADS; - private static final String TIMETOLIVE = VMComponentDefnType.TIMETOLIVE; private static final String INPUT_BUFFER_SIZE = VMComponentDefnType.INPUT_BUFFER_SIZE; private static final String OUTPUT_BUFFER_SIZE = VMComponentDefnType.OUTPUT_BUFFER_SIZE; private static final int DEFAULT_SERVER_PORT = 31000; private static final int DEFAULT_MAX_THREADS = 15; - private static final long DEFAULT_TIMETOLIVE = 15000; private static final long DEFAULT_WAITFORSERVICES = 500; private static final int DEFAULT_INPUT_BUFFER_SIZE = 0; private static final int DEFAULT_OUTPUT_BUFFER_SIZE = 0; - private static final String SOCKET_WORKER_POOL_NAME = "SocketWorkerQueue"; //$NON-NLS-1$ private SocketListener listener; - private WorkerPool workerPool; @Inject public SocketVMController((a)Named(Configuration.HOST) Host host, @Named(Configuration.PROCESSNAME) String processName, ClusteredRegistryState registry, ServerEvents serverEvents, MessageBus bus, HostManagement hostManagement) throws Exception { @@ -94,17 +88,6 @@ // so that the port can be made available sooner on bounces. @Override public void shutdown(boolean now) { - if (workerPool != null) { - try { - workerPool.shutdownNow(); - } catch (Exception e) { - //ignore - } finally { - workerPool = null; - } - - } - if (listener != null) { try { listener.stop(); @@ -128,7 +111,6 @@ Properties props = getProperties(); int socketPort = PropertiesUtils.getIntProperty(props, SERVER_PORT, DEFAULT_SERVER_PORT); int maxThreads = PropertiesUtils.getIntProperty(props, MAX_THREADS, DEFAULT_MAX_THREADS); - long timeToLive = PropertiesUtils.getLongProperty(props, TIMETOLIVE, DEFAULT_TIMETOLIVE); int inputBufferSize = PropertiesUtils.getIntProperty(props, INPUT_BUFFER_SIZE, DEFAULT_INPUT_BUFFER_SIZE); int outputBufferSize = PropertiesUtils.getIntProperty(props, OUTPUT_BUFFER_SIZE, DEFAULT_OUTPUT_BUFFER_SIZE); String bindaddress = VMNaming.getBindAddress(); @@ -138,11 +120,10 @@ }; logMessage(PlatformPlugin.Util.getString("SocketVMController.1", param)); //$NON-NLS-1$ - workerPool = WorkerPoolFactory.newWorkerPool(SOCKET_WORKER_POOL_NAME, maxThreads, timeToLive); ServerSocketConfiguration helper = new ServerSocketConfiguration(); try { helper.init(); - listener = new SocketListener(socketPort, bindaddress, this.clientServices, inputBufferSize, outputBufferSize, workerPool, helper.getServerSSLEngine(), helper.isClientEncryptionEnabled(), PlatformProxyHelper.getSessionServiceProxy(PlatformProxyHelper.ROUND_ROBIN_LOCAL)); + listener = new SocketListener(socketPort, bindaddress, this.clientServices, inputBufferSize, outputBufferSize, maxThreads, helper.getServerSSLEngine(), helper.isClientEncryptionEnabled(), PlatformProxyHelper.getSessionServiceProxy(PlatformProxyHelper.ROUND_ROBIN_LOCAL)); } catch (Exception e) { LogManager.logCritical(LogCommonConstants.CTX_CONTROLLER, e, PlatformPlugin.Util.getString("SocketVMController.2",param)); //$NON-NLS-1$ System.exit(1); @@ -182,10 +163,7 @@ } protected WorkerPoolStats getProcessPoolStats() { - if (workerPool == null) { - return null; - } - return workerPool.getStats(); + return this.listener.getProcessPoolStats(); } @Deprecated Modified: trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/server/ServerWorkItem.java =================================================================== --- trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/server/ServerWorkItem.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/server/ServerWorkItem.java 2009-03-30 20:55:34 UTC (rev 664) @@ -34,7 +34,6 @@ import org.teiid.dqp.internal.process.DQPWorkContext; -import com.metamatrix.admin.api.exception.AdminException; import com.metamatrix.admin.api.exception.AdminProcessingException; import com.metamatrix.api.exception.ComponentNotFoundException; import com.metamatrix.api.exception.MetaMatrixProcessingException; @@ -77,9 +76,6 @@ */ public void run() { DQPWorkContext.setWorkContext(this.socketClientInstance.getWorkContext()); - if (LogManager.isMessageToBeRecorded(SocketVMController.SOCKET_CONTEXT, MessageLevel.DETAIL)) { - LogManager.logDetail(SocketVMController.SOCKET_CONTEXT, "forwarding message to listener:" + message); //$NON-NLS-1$ - } Message result = null; String service = null; final boolean encrypt = message.getContents() instanceof SealedObject; @@ -162,20 +158,25 @@ // Case 5558: Differentiate between system level errors and // processing errors. Only log system level errors as errors, // log the processing errors as warnings only - String msg = PlatformPlugin.Util.getString("ServerWorkItem.Received_exception_processing_request"); //$NON-NLS-1$ if (e instanceof MetaMatrixProcessingException) { - LogManager.logWarning(context, e, msg); + logProcessingException(e, context); } else if (e instanceof AdminProcessingException) { - LogManager.logWarning(context, e, msg); + logProcessingException(e, context); } else { - LogManager.logError(context, e, msg); + LogManager.logError(context, e, PlatformPlugin.Util.getString("ServerWorkItem.Received_exception_processing_request", this.socketClientInstance.getWorkContext().getConnectionID())); //$NON-NLS-1$ } - - if (e instanceof AdminException) { - return e; - } return new ExceptionHolder(e); } + + private void logProcessingException(Throwable e, String context) { + Throwable cause = e; + while (cause.getCause() != null) { + cause = e.getCause(); + } + StackTraceElement elem = cause.getStackTrace()[0]; + LogManager.logDetail(context, e, "Processing exception for session", this.socketClientInstance.getWorkContext().getConnectionID()); //$NON-NLS-1$ + LogManager.logWarning(context, PlatformPlugin.Util.getString("ServerWorkItem.processing_error", e.getMessage(), this.socketClientInstance.getWorkContext().getConnectionID(), e.getClass().getName(), elem)); //$NON-NLS-1$ + } } \ No newline at end of file Modified: trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/server/SocketClientInstance.java =================================================================== --- trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/server/SocketClientInstance.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/server/SocketClientInstance.java 2009-03-30 20:55:34 UTC (rev 664) @@ -37,7 +37,6 @@ import com.metamatrix.common.comm.platform.socket.ObjectChannel; import com.metamatrix.common.comm.platform.socket.SocketVMController; import com.metamatrix.common.log.LogManager; -import com.metamatrix.common.queue.WorkerPool; import com.metamatrix.common.util.crypto.CryptoException; import com.metamatrix.common.util.crypto.Cryptor; import com.metamatrix.common.util.crypto.DhKeyGenerator; @@ -56,7 +55,6 @@ public class SocketClientInstance implements ChannelListener, ClientInstance { private final ObjectChannel objectSocket; - private final WorkerPool workerPool; private final ClientServiceRegistry server; private Cryptor cryptor; private boolean usingEncryption; @@ -64,9 +62,8 @@ private DQPWorkContext workContext = new DQPWorkContext(); private SessionServiceInterface sessionService; - public SocketClientInstance(ObjectChannel objectSocket, WorkerPool workerPool, ClientServiceRegistry server, boolean isClientEncryptionEnabled, SessionServiceInterface sessionService) { + public SocketClientInstance(ObjectChannel objectSocket, ClientServiceRegistry server, boolean isClientEncryptionEnabled, SessionServiceInterface sessionService) { this.objectSocket = objectSocket; - this.workerPool = workerPool; this.server = server; this.usingEncryption = isClientEncryptionEnabled; this.sessionService = sessionService; @@ -146,7 +143,7 @@ if (LogManager.isMessageToBeRecorded(SocketVMController.SOCKET_CONTEXT, MessageLevel.DETAIL)) { LogManager.logDetail(SocketVMController.SOCKET_CONTEXT, "processing message:" + packet); //$NON-NLS-1$ } - workerPool.execute(new ServerWorkItem(this, packet.getMessageKey(), packet, this.server, this.sessionService)); + new ServerWorkItem(this, packet.getMessageKey(), packet, this.server, this.sessionService).run(); } public void shutdown() throws CommunicationException { Modified: trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/server/SocketListener.java =================================================================== --- trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/server/SocketListener.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/server/src/main/java/com/metamatrix/common/comm/platform/socket/server/SocketListener.java 2009-03-30 20:55:34 UTC (rev 664) @@ -23,9 +23,8 @@ package com.metamatrix.common.comm.platform.socket.server; import java.net.InetSocketAddress; -import java.util.concurrent.SynchronousQueue; -import java.util.concurrent.ThreadPoolExecutor; -import java.util.concurrent.TimeUnit; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; import javax.net.ssl.SSLEngine; @@ -43,6 +42,7 @@ import com.metamatrix.common.log.LogManager; import com.metamatrix.common.queue.WorkerPool; import com.metamatrix.common.queue.WorkerPoolFactory; +import com.metamatrix.common.queue.WorkerPoolStats; import com.metamatrix.core.log.MessageLevel; import com.metamatrix.core.util.MetaMatrixProductVersion; import com.metamatrix.platform.security.api.service.SessionServiceInterface; @@ -53,11 +53,12 @@ */ public class SocketListener implements ChannelListenerFactory { private ClientServiceRegistry server; - private WorkerPool workerPool; private SSLAwareChannelHandler channelHandler; private Channel serverChanel; private boolean isClientEncryptionEnabled; private SessionServiceInterface sessionService; + private WorkerPool workerPool; + private ExecutorService bossService; /** * @@ -71,7 +72,7 @@ */ public SocketListener(int port, String bindAddress, ClientServiceRegistry server, int inputBufferSize, - int outputBufferSize, WorkerPool workerPool, SSLEngine engine, boolean isClientEncryptionEnabled, SessionServiceInterface sessionService) { + int outputBufferSize, int maxWorkers, SSLEngine engine, boolean isClientEncryptionEnabled, SessionServiceInterface sessionService) { this.isClientEncryptionEnabled = isClientEncryptionEnabled; this.sessionService = sessionService; if (port < 0 || port > 0xFFFF) { @@ -79,18 +80,14 @@ } this.server = server; - this.workerPool = workerPool; + this.workerPool = WorkerPoolFactory.newWorkerPool("SocketWorker", maxWorkers, 120000); //$NON-NLS-1$ + this.bossService = Executors.newCachedThreadPool(); if (LogManager.isMessageToBeRecorded(SocketVMController.SOCKET_CONTEXT, MessageLevel.DETAIL)) { LogManager.logDetail(SocketVMController.SOCKET_CONTEXT, "server = " + this.server + "binding to port:" + port); //$NON-NLS-1$ //$NON-NLS-2$ } - ThreadPoolExecutor executor = new ThreadPoolExecutor(0, - Integer.MAX_VALUE, 2, TimeUnit.MINUTES, - new SynchronousQueue<Runnable>(), - new WorkerPoolFactory.DefaultThreadFactory("ServerNio")); //$NON-NLS-1$ + ChannelFactory factory = new NioServerSocketChannelFactory(bossService, workerPool, workerPool.getPoolSize()); - ChannelFactory factory = new NioServerSocketChannelFactory(executor, executor); - ServerBootstrap bootstrap = new ServerBootstrap(factory); this.channelHandler = new SSLAwareChannelHandler(this, engine, Thread.currentThread().getContextClassLoader()); bootstrap.setPipelineFactory(channelHandler); @@ -105,6 +102,10 @@ this.serverChanel = bootstrap.bind(new InetSocketAddress(bindAddress, port)); } + public WorkerPoolStats getProcessPoolStats() { + return this.workerPool.getStats(); + } + public int getPort() { return ((InetSocketAddress)this.serverChanel.getLocalAddress()).getPort(); } @@ -115,6 +116,8 @@ public void stop() { this.serverChanel.close(); + this.workerPool.shutdownNow(); + this.bossService.shutdownNow(); } public SocketListenerStats getStats() { @@ -127,7 +130,7 @@ } public ChannelListener createChannelListener(ObjectChannel channel) { - return new SocketClientInstance(channel, this.workerPool, this.server, this.isClientEncryptionEnabled, this.sessionService); + return new SocketClientInstance(channel, this.server, this.isClientEncryptionEnabled, this.sessionService); } } \ No newline at end of file Modified: trunk/server/src/main/resources/com/metamatrix/platform/i18n.properties =================================================================== --- trunk/server/src/main/resources/com/metamatrix/platform/i18n.properties 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/server/src/main/resources/com/metamatrix/platform/i18n.properties 2009-03-30 20:55:34 UTC (rev 664) @@ -1273,7 +1273,8 @@ LDAPMembershipDomain.Admin_credentials=Admin DN and/or password supplied for LDAP Membership Domain {0} are invalid. LDAPMembershipDomain.Require_memberof_property=Users in LDAP Membership Domain {0} will not appear as members of any group since user's memberOf and group's memberOf attributes are both unspecified. -ServerWorkItem.Received_exception_processing_request=Received exception processing request +ServerWorkItem.Received_exception_processing_request=Unexpected exception for session {0} +ServerWorkItem.processing_error=Processing exception ''{0}'' for session {1}. Exception type {2} throw from {3}. Enable detail logging to see the entire stacktrace. ServerWorkItem.Component_Not_Found=Component not found: {0} SocketVMController.0=Register Admin API Modified: trunk/server/src/test/java/com/metamatrix/common/comm/platform/socket/server/TestCommSockets.java =================================================================== --- trunk/server/src/test/java/com/metamatrix/common/comm/platform/socket/server/TestCommSockets.java 2009-03-30 20:04:22 UTC (rev 663) +++ trunk/server/src/test/java/com/metamatrix/common/comm/platform/socket/server/TestCommSockets.java 2009-03-30 20:55:34 UTC (rev 664) @@ -46,7 +46,6 @@ import com.metamatrix.common.comm.platform.socket.client.SocketServerConnection; import com.metamatrix.common.comm.platform.socket.client.SocketServerConnectionFactory; import com.metamatrix.common.comm.platform.socket.client.UrlServerDiscovery; -import com.metamatrix.common.queue.WorkerPoolFactory; import com.metamatrix.common.util.crypto.NullCryptor; import com.metamatrix.platform.security.api.ILogon; import com.metamatrix.platform.security.api.LogonResult; @@ -74,8 +73,7 @@ SessionServiceInterface sessionService = mock(SessionServiceInterface.class); csr.registerClientService(ILogon.class, new LogonImpl(sessionService, "fakeCluster"), "foo"); //$NON-NLS-1$ //$NON-NLS-2$ listener = new SocketListener(addr.getPort(), addr.getAddress().getHostAddress(), - csr, 1024, 1024, WorkerPoolFactory.newWorkerPool( - "testIO", 1, 120000), null, true, sessionService); //$NON-NLS-1$ + csr, 1024, 1024, 1, null, true, sessionService); try { Properties p = new Properties(); @@ -152,8 +150,7 @@ } }, "foo"); //$NON-NLS-1$ listener = new SocketListener(addr.getPort(), addr.getAddress().getHostAddress(), - csr, 1024, 1024, WorkerPoolFactory.newWorkerPool( - "testIO", 1, 120000), serverSSL, isClientEncryptionEnabled, sessionService); //$NON-NLS-1$ + csr, 1024, 1024, 1, serverSSL, isClientEncryptionEnabled, sessionService); SocketListenerStats stats = listener.getStats(); assertEquals(0, stats.maxSockets); assertEquals(0, stats.objectsRead);